Question

我希望在Android设备上具有实时音频流功能，该设备通过设备的MIC捕获音频并将其发送到服务器。我知道在录制后发送一个音频文件，但如果是实时我需要帮助。可以通过将字节数组连续发送到服务器来完成。如果是这样或者如果有其他方式，请分享您的想法。谢谢。

编辑 -

Android客户端代码： -

public class Main extends Activity {
    private MediaRecorder recorder;

    private final String TAG = "AudioTest";

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        String hostname = "192.168.50.25";
        int port = 2004;

        Socket socket = null;
        try {
            socket = new Socket(InetAddress.getByName(hostname), port);

        } catch (UnknownHostException e) {

            Log.d(TAG, "Inside  UnknownHostException@@@@@@@@@@@@@@@@@@@@@@");

            e.printStackTrace();
        } catch (IOException e) {
            Log.d(TAG, "Inside  IOException%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%");

            e.printStackTrace();
        }

        ParcelFileDescriptor pfd = ParcelFileDescriptor.fromSocket(socket);

        recorder = new MediaRecorder();
        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

        recorder.setOutputFile(pfd.getFileDescriptor());


        try {
            Log.i(TAG, pfd.getFileDescriptor().toString());
        } catch (Exception e) {
            Log.d(TAG, "Inside  MyException################################");
        }

        try {
            recorder.prepare();
        } catch (IllegalStateException e) {

            e.printStackTrace();
        } catch (IOException e) {

            e.printStackTrace();
        }

        recorder.start();

    }

JAVA服务器代码 -

public class Provider {
    ServerSocket providerSocket;
    Socket connection = null;
    ObjectOutputStream out;
    ObjectInputStream in;
    String message;

    Provider() {
    }

    void run() {
        try {
            // 1. creating a server socket
            providerSocket = new ServerSocket(2004, 10);
            // 2. Wait for connection
            System.out.println("Waiting for connection");

            connection = providerSocket.accept();
            System.out.println("Connection received from "
                    + connection.getInetAddress().getHostName());
            // 3. get Input and Output streams
            out = new ObjectOutputStream(connection.getOutputStream());
            out.flush();
            in = new ObjectInputStream(connection.getInputStream());
            sendMessage("Connection successful");
            // 4. The two parts communicate via the input and output streams
            do {
                try {
                    message = (String) in.readObject();
                    System.out.println("client>" + message);
                    if (message.equals("bye"))
                        sendMessage("bye");
                } catch (ClassNotFoundException classnot) {
                    System.err.println("Data received in unknown format");
                }
            } while (!message.equals("bye"));
        } catch (IOException ioException) {
            ioException.printStackTrace();
        } finally {
            // 4: Closing connection
            try {
                in.close();
                out.close();
                providerSocket.close();
            } catch (IOException ioException) {
                ioException.printStackTrace();
            }
        }
    }

    void sendMessage(String msg) {
        try {
            out.writeObject(msg);
            out.flush();
            System.out.println("server>" + msg);
        } catch (IOException ioException) {
            ioException.printStackTrace();
        }
    }

    public static void main(String args[]) {
        Provider server = new Provider();
        while (true) {
            server.run();
        }
    }
}

Answer 1

您可以这样使用套接字：

String hostname = "1.2.3.4";
int port = 865;

Socket socket = null;

try {
    socket = new Socket(InetAddress.getByName(hostname), port);
} catch (Exception e) {

    e.printStackTrace();
}

ParcelFileDescriptor socketedFile = ParcelFileDescriptor.fromSocket(socket);

然后将socketedFile设置为录音机的输出文件（socketedFile.getFileDescriptor（））。这将以字节形式发送。

或者为了使其更稳定，将数据从MediaRecorder写出到本地缓冲区然后有一个单独的线程检查缓冲区并将其写入套接字，以允许套接字连接中的小连接。

有关详细信息，请参阅此问题：android stream audio to server

显然，您需要在服务器上运行一个应用程序来接收您的字节并将其转换为音频数据。

流媒体实时音频

1 个答案: